ACCURACY ESPACIOS DE MUESTREO ESPACIOS INVARIANTES POR TRASLACIONES FRAMES FUNCIONES HOMOGENEAS FUNCIONES REFINABLES Frames Fusion frames GRADO DE PRECISION HOMOGENEOUS FUNCTIONS MARCOS REFINABLE FUNCTIONS SAMPLING SPACES SHIFT INVARIANT SPACES Dual fusion frames Mathematical techniques fusion frames Consistent reconstruction Dual frames Erasures Functional analysis G-frames Gabor systems Linear algebra Oblique projections Optimal dual fusion frames Optimization Projective reconstruction Projective reconstruction systems Signal processing